title: A swollen knee and tremor.
mesh_terms: D001170:Arthritis, Infectious / Q000175:diagnosis* / Q000382:microbiology; D002648:Child; D006801:Humans; D007719:Knee Joint / Q000382:microbiology*; D008297:Male; D013290:Streptococcal Infections / Q000175:diagnosis*; D013297:Streptococcus pyogenes; D014202:Tremor / Q000382:microbiology*; D014955:Wrist Joint / Q000382:microbiology